Don't know about unigine, will try it just give me a minute or two. 3DMark puts them at 99% at all times.
EDIT; Okay yeah they both range between 100% and 99% running maxed settings in 3440x1440
EDIT#2; Figured I never gave you full system specs
PSU - BeQuiet Dark Power Pro 11 1000w
MOBO - MSI Gaming M7
CPU - i7 6700k @5ghz
GPU - GTX 1080 FTW SLI /w NZXT Kraken
RAM - 32GB DDR4 3200mhz cl11.